package com.clp.eduservice.controller;


import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.clp.config.execptionHandler.GuLiException;
import com.clp.eduservice.entity.vo.TeacherQuery;
import com.clp.eduservice.service.EduTeacherService;
import com.clp.eduservice.entity.EduTeacher;
import com.clp.utils.Result;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import lombok.val;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.List;

/**
 * <p>
 * 讲师 前端控制器
 * </p>
 *
 * @author testjava
 * @since 2022-01-25
 */
@Api(description = "讲师管理")
@RestController
@RequestMapping("/eduService/teacher")
@CrossOrigin//解决跨域问题
public class EduTeacherController {
    //访问地址: http://localhost:8001/eduservice/teacher/findAll
    
    //把service注入
    @Autowired
    private EduTeacherService teacherService;
    //1.查询讲师表中的所有数据
    
    @ApiOperation(value="所有讲师列表")
    @GetMapping("findAll")
    public Result findAllTeacher(){
        //调用Service方法实现查询所有的操作
       List<EduTeacher> list= teacherService.list(null);
       return Result.ok().data("items",list);
    }
    //2.逻辑删除讲师的方法
    @ApiOperation(value = "逻辑删除讲师")
    @DeleteMapping("{id}")
    public Result removeTeacher(@ApiParam(name="id",value = "讲师ID",required = true)@PathVariable String id
                                   )
    {
           boolean flag= teacherService.removeById(id);
           if (flag){
               return Result.ok();
           }else {
               return Result.error();
           }
    }
    
    //3.分页查询讲师的方法
    //current代表当前页
    //limit 每页记录数
    @ApiOperation(value = "分页查询讲师")
    @GetMapping("teacherList/{current}/{limit}" )
    public Result pageTeacher(@PathVariable Long current,@PathVariable Long limit){
//        try {
//            int i=10/0; 
//        }catch (Exception e){
//            //执行自定义异常
//            throw new GuLiException(20001,"执行了自定义异常处理...");
//        }
        //创建page对象
        Page<EduTeacher> teacherPage=new Page<>(current,limit);
        //调用方法实现分页
        teacherService.page(teacherPage,null);
        
        long total=teacherPage.getTotal();//总记录数
        List<EduTeacher> records=teacherPage.getRecords();//数据list集合
        
        return Result.ok().data("total",total).data("rows",records);
    }
    
    //4.条件查询带分页的方法
    @ApiOperation(value = "分页查询讲师带条件的")
    @PostMapping("pageTeacherCondition/{current}/{limit}")
    public Result pageTeacherCondition(@PathVariable Long current, @PathVariable Long limit, 
                                       @RequestBody(required = false) 
            TeacherQuery teacherQuery){

        //创建page对象
        Page<EduTeacher> teacherPage=new Page<>(current,limit);
        //构建条件
        QueryWrapper<EduTeacher>wrapper =new QueryWrapper<>();
        //多条件组合查询
        String name = teacherQuery.getName();
        Integer level = teacherQuery.getLevel();
        String begin = teacherQuery.getBegin();
        String end = teacherQuery.getEnd();
        //判断条件值是否为空,如果不为空拼接条件
        if (!StringUtils.isEmpty(name)){
            //构建条件
            wrapper.like("name",name);
        }
        if (!StringUtils.isEmpty(level)){
            //构建条件
            wrapper.eq("level",level);
        }
        if (!StringUtils.isEmpty(begin)){
            //构建条件
            wrapper.ge("gmt_create",begin);
        }
        if (!StringUtils.isEmpty(end)){
            //构建条件
            wrapper.le("gmt_create",end);
        }
        //排序
        wrapper.orderByDesc("gmt_Create");
        //调用方法实现分页并且拥有条件查询功能
        teacherService.page(teacherPage,wrapper);
        long total=teacherPage.getTotal();//总记录数
        List<EduTeacher> records=teacherPage.getRecords();//数据list集合
        return Result.ok().data("total",total).data("rows",records);
    }
    
    //5.添加讲师
    @ApiOperation(value = "添加讲师")
    @PostMapping("addTeacher")
    public Result add(@RequestBody EduTeacher eduTeacher){
        boolean save=teacherService.save(eduTeacher);
        if (save){
            return Result.ok();
        }else {
           return Result.error();
        }
    }
    //6.根据讲师ID进行查询
    @ApiOperation(value = "根据讲师ID进行查询")
    @GetMapping("findTeacherById/{id}")
    public Result findTeacherById(@PathVariable String id){
        EduTeacher eduTeacher = teacherService.getById(id);
        return Result.ok().data("teacher",eduTeacher);
    }
    
    //7.讲师修改功能
    @ApiOperation(value = "讲师修改")
    @PostMapping("updateTeacher")
    public Result updateTeacher(@RequestBody EduTeacher eduTeacher){
        boolean flag = teacherService.updateById(eduTeacher);
        if (flag){
            return Result.ok();
        }else {
            return Result.error();
        }
    }
}

